Pumping-jack.



No. 675,466. Patented Juno 4, I91". M. F. CLARK 8; F. J. FERGUSON.

PUIPING JACK.

(Application filed Aug. 10, 1900.)

(Ila Modal.)

I IIINIIIHhlH q INVENTORS 7, 6/ wz.

ATTORNEYS.

WIT/168858.-

UNlTED STATES PATENT OEEIcE.

MORRIS F. CLARK AND FRED J. FERGUSON, OF CIIIPMONK, NEYV YORK.

PUMPING-JACK.

SPECIFICATION forming part of Letters Patent No. 675,466, dated June 4, 1901.

Application filed August 10,1900. Serial No. 26,501. (No model.)

To a whom it inlay concern:

Be it known that we, MORRIS F. CLARK and FRED J. FERGUSON, of Chipmonk, in the county of Oattaraugus, in the State of New York, have invented new and usefulImprovements in Pumping-Jacks, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to improvements in pumping-jacks, and has for its object the production of a simple and efficient device for effecting the reciprocal movement of a valve, plunger, or other pumping device, which may be located in the lower end of an oil-well or other shaft of considerable depth, for the purpose of raising the oil or other fluid to the surface of the ground.

The invention is further applicable for use in lifting and releasing drill-rods or other apparatus requiring a reciprocal movement in the construction and operation of oil and similar wells.

To this end the invention consists in the construction, combination, and arrangement of the component parts of a pumping-jack, as hereinafter fully described, and pointed out in the claims.

In describing this invention reference is had to the accompanying drawings, forming a part of this specification, in which like reference characters refer to the same parts in all the views.

Figure 1 is a top plan View of our invention shown as operatively connected to the head of a casing of an oil-well. Figs. 2 and 3 are respectively front and side elevations of the parts seen in Fig. 1.

It is well known that oil and other wells of considerable depth are frequently located in hilly and precipitous territory and that considerable difliculty is experienced in suitably connecting the surface-rods to the pumpingjack and to the source of power. This difficulty is obviated by our improved pumpingjack,which consists of a base 1, a reciprocallymovable rack 2, revoluble pinions 3, and cable-drums 4.

The base 1 may be of any desired form, size, or construction and preferably consists of oppositely-arranged clamping-sections 5 and 6,

mounted on a head A of an ordinary casing B, which forms the shaft of an oil or similar well.

The head A is usually provided at its upper end with an annular flange a. The sections 5 and 6 are each supported upon the top face of the head CL and are provided with depending flanges 7, encircling portions of the flange a. of the head A and engaged with the lower faces of said flange a. The sections 5 and 6 are also provided with transverse apertures for receiving suitable clamping-bolts S, which serve to clamp said sections firmly upon the head A and to permit the sections to be adjusted circum ferentially with relation to the head A when desired. A suitable brace 9 is secured to one of the sections, as the section 5, and serves to hold the rack 2, presently described, in operative position and to guide the same in its reciprocal movement. The section 6 is provided with a suitable bearing 10 for receiving a shaft 11, to which the pinions 3 and drums 4 are secured.

The rack 2 may be of any desired length and preferably consists of separated toothed bars united to each other at their upper ends by suitable cross-bars 12 and 13, which serve to stiifen the rack and permit the parts to be readily dissembled when desired.

14 represents a pipe or conduit extending downwardly through the head A and easing B and is provided at its upper ends with a suitable branch 15, through which the oil is discharged, and with a stuffing-box 16, arranged above the branch 15.

A suitable piston-rod (or polish-rod) 17 is reciprocally movable within the pipe or conduit la, extends upwardly through and beyond the stuffing-box, and is provided at its lower end with a suitable pump (not illustrated) for lifting or forcing the oil upwardly and discharging the samethrough the branch conduit 15. The upper end of the pistonrod 17 is adjustably secured to the crossbar 13 of the rack 2 by suitable collars 18, which engage the upper and lower faces of said bar 13. It is thus evident that as the rack 2 is reciprocated the piston 17 is also reciprocated within the conduit 14, thereby actuating the pump at the lower end of the rod for the purpose above mentioned.

The means for reciprocating the rack 2 and piston 17 consists of the pinions 3, drums 4, and cables 19, which may be connected by any desired connections, as the ordinary surface rods, to any source of power. (Not necessary to herein illustrate or describe.)

It is well understood that the power mechanism for actuating the cable 19 is provided with a suitable crank or eccentric, whereby the cable is drawn in one direction a limited distance and released when the crank or eccentric reaches the limit of its throw in one direction.

The gears 3 are fixed to the shaft 11 on opposite sides of the head A and are engaged with the teeth of the rack 2 for the purpose of lifting said rack and the piston-rod con nected thereto. The drums 4 are also secured to the shaft 11 on opposite sides of the head A and preferably in close proximity to the inner faces of the gears 33 and are provided with peripheral grooves for receiving the cables 19. These cables 19 are secured at one end by any suitable fastening means 20 to the peripheries of the drums 4:, and their opposite ends are passed partially around said drums and connected to the surface bars. (Not illustrated.)

In the operation of this invention the cables 19 are drawn in the direction indicated by the arrow 2]. for rotating the gears in one direction for the purpose of lifting the rack 2,

the piston-rod 17,and pump connected thereto upwardly. When the eccentric, previously mentioned, to which the cables 19 are connected, reaches the limit of its throw for rais ing the rack 2, the cables 19 are released in the. usual manner and the piston-rod and rack descend by gravity to the limit of their downward movement and the operation is repeated, thereby drawing or forcing the oil up- Wardly through the tube 14 and outwardly through the branch conduit 15.

The operation of our invention will nowb readily understood upon reference to the foregoing description and the accom panyingdrawings, and it will be particularly noted that the position of the racks and pinions and also the drums 4 may be somewhat varied and that other changes may be made in the detail construction and arrangement of the parts of this invention without departing from the spirit thereof. Therefore we do not limit ourselves to the precise construction and arran gement herein shown and described.

7 Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. The combination with the casing and head of a well, of a supporting-base mounted on the head, a rack having upright toothed bars arranged at opposite sides of the casing and extending .in planes beneath the base, gears jonrnaled on the baseand meshing with the toothed arms, and means for simultaneously rotating the gears for the purpose described.

2. The combination with the casing and head of a well, of a supporting-base mounted on the head, a rack having upright toothed bars arranged at opposite sides of the casing and extending in planes beneath the base, guides mounted on the base, a shaft journaled on the base and having its opposite ends each provided with a gear and drum, upright toothed arms united at their upper ends and having their lower ends interposed between the gears and guides and meshing with the gears, and cables having one end secured to the drums and their opposite ends adapted to be connected to a source of power for rotating the drums in one direction.

3. A pumping-jack comprising a casinghead having a flange, a base mounted on the head and provided with flanges engaged with the lower faces of the former flange, a gear journaled on the base, and an upright toothed bar meshing with the gear for the purpose described.

4:. A pumping-jack comprising a casinghead, a base composed of separate sections mounted on'the head, means for clamping said sections to each other and to the base, a gear journaled on one of the sections, and a reciprocallymovable toothed arm meshing with the gear for the purpose set forth. 5. A pumpingjack comprising a casinghead having a flange,a base composed of separate sections mounted on the head and pro: vided with flanges interlocking with the former flange, means for drawing said sections toward each other for engaging their flanges with that of the head, a shaft journaled on one of the sections and having its opposite ends provided with gears, and a rack having toothed arms engaged with said gears for the purpose described.

6. The combination with a casing and head of an oil-well, of a base composed of separate sections detachably secured to said head and provided with a guide, a conduit arranged within the casing, a pump-rod reciprocally movable within the conduit, gears journaled on one of the sections of the base, a rack having separate toothed bars interposed between the guide and gears and meshing with said gears, said rack being connected to the pump- MORRIS F. CLARK. FRED J. FERGUSON.

W'itnesses:

CHAS. M. SoULE, GEO. II. PIERCE. 

